DELTA 1 DEB, 21275

Orbit data source: Space-Track

DELTA 1 DEB, 21275 is space debris in SSO originally from a launch on Thu, 12 Jun 1975 UTC launched from the Air Force Western Test Range (AFWTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/21275?theme=dark&initialShowStats=false

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Identifier

21275, 1975-052L

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1975-06-12 (51 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.2 m

Radar Cross Section

Small (<0.1 m²)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21275U 75052L   26135.26371236  .00000015  00000-0  91180-4 0  9992
2 21275  99.8764  43.1325 0032813 260.0114 223.2465 13.51900557727827

Epoch: 2026-05-15T06:19Z

TLE epoch observation values (Epoch: 2026-05-15T06:19:44.747Z)

Latitude

55.81096°

Longitude

-90.02922°

Altitude

1,092.295 km

Speed

7.303 km/s

True Right ascension

15h 51m 37s

True Declination

55° 39' 29"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

15:59:54

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,086.997 km

Perigee altitude

1,038.167 km

Semi-major axis

7,440.719 km

Eccentricity

0.00328

Inclination

99.8764°

RAAN

43.1325°

Arg. of periapsis

260.0114°

True anomaly

222.98965°

Mean anomaly

223.2465°

Eccentric anomaly

223.118°

Mean motion

3.38159 °/min

Orbital period

106.46 mins

BSTAR

0.00009118

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Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB, 21378 (Decayed)

DELTA 1 DEB, 21456 (Decayed)

DELTA 1 DEB, 21506

DELTA 1 DEB, 21675 (Decayed)

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 26845

DELTA 1 DEB, 21563 (Decayed)

DELTA 1 DEB, 42656

DELTA 1 DEB, 21438

DELTA 1 DEB, 21391 (Decayed)

DELTA 1 DEB, 21516

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DELTA 1 DEB Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
11 mins	2026-05-16 17:22:16.132Z	146.977° SSE	2026-05-16 17:27:16.132Z	57.155° ENE	42.029°	2026-05-16 17:33:16.132Z	351.487° N
7 mins	2026-05-16 19:09:16.132Z	232.789° WSW	2026-05-16 19:12:16.132Z	265.436° W	19.573°	2026-05-16 19:16:16.132Z	307.426° NW
11 mins	2026-05-17 06:17:16.132Z	28.514° NE	2026-05-17 06:22:16.132Z	94.994° ESE	38.467°	2026-05-17 06:28:16.132Z	175.511° S

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out DELTA 1 DEB, 21275 on other resources

View DELTA 1 DEB, 21275 on Heavens-Above

View DELTA 1 DEB, 21275 on Keep Track

View DELTA 1 DEB, 21275 on Celestrak

View DELTA 1 DEB, 21275 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

DELTA 1 DEB, 21275

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-05-15T06:19:44.747Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 21275 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago